Transactions of Materials and Heat Treatment

Title：Pulse current auxiliary deep drawing of SiCp/2024Al composites sheet

Authors： WANG Bo1 ZHANG Kai-feng1 LAI Xiao-ming2 WANG Guo-feng1 WANG Zhe2 WANG Yong-li2 ZHANG Yu-liang2

Unit： 1.National Key Laboratory of Science and Technology on Precision Heat Processing of Metal Harbin Institute of Technology Harbin 150001 China 2. Beijing Spacecrafts Beijing 100190 China

KeyWords： SiCp/2024Al composites pulse current thermal deep drawing temperature distribution

ClassificationCode：TG316

year,vol(issue):pagenumber：2012,37(5):22-27

Abstract：

The feasibility of pulse current auxiliary thermal deep drawing was designed and investigated to form the SiC particle reinforced Aluminum composites sheet. This technique set the sheet directly into the die and inputted high-intensity pulse current to heat sheet, which had many advantages, including high-speed heating, lower heat loss and reducing oxidation. The average pulse current density was achieved at 21.7 A·mm-2 with temperature of SiCp/2024Al composites reaching around 400℃. During electrification, the stainless steel was inserted between the sheet and the copper electrodes successfully prevented heat dissipation and promoted temperature uniformity. The workpiece shows good shape retention, surface quality and high geometry accuracy. The present investigation has successfully verified the feasibility of process procedure for PCATDD of SiCp/2024Al composites sheet.

Funds：

国家自然科学基金资助项目（51175112）；中央高校基本科研业务费专项资金资助项目（HITKLOF2010039）

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